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a7f3a06cbb
rt2x00lib depended on 2 crc algorithms because rt61/rt73 use a different algorithm then rt2800. This means that even when only 1 algorithm was needed, the dependency was still present for both. By moving the checksum generation to the driver we can clean up 2 annoying flags (which indicated which checksum was required) and move the dependency to where it belongs: the driver. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
/*
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Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
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<http://rt2x00.serialmonkey.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the
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Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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Module: rt2x00lib
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Abstract: rt2x00 firmware loading routines.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include "rt2x00.h"
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#include "rt2x00lib.h"
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static int rt2x00lib_request_firmware(struct rt2x00_dev *rt2x00dev)
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{
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struct device *device = wiphy_dev(rt2x00dev->hw->wiphy);
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const struct firmware *fw;
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char *fw_name;
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int retval;
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u16 crc;
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/*
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* Read correct firmware from harddisk.
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*/
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fw_name = rt2x00dev->ops->lib->get_firmware_name(rt2x00dev);
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if (!fw_name) {
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ERROR(rt2x00dev,
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"Invalid firmware filename.\n"
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"Please file bug report to %s.\n", DRV_PROJECT);
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return -EINVAL;
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}
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INFO(rt2x00dev, "Loading firmware file '%s'.\n", fw_name);
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retval = request_firmware(&fw, fw_name, device);
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if (retval) {
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ERROR(rt2x00dev, "Failed to request Firmware.\n");
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return retval;
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}
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if (!fw || !fw->size || !fw->data) {
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ERROR(rt2x00dev, "Failed to read Firmware.\n");
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return -ENOENT;
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}
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crc = rt2x00dev->ops->lib->get_firmware_crc(fw->data, fw->size);
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if (crc != (fw->data[fw->size - 2] << 8 | fw->data[fw->size - 1])) {
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ERROR(rt2x00dev, "Firmware checksum error.\n");
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retval = -ENOENT;
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goto exit;
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}
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INFO(rt2x00dev, "Firmware detected - version: %d.%d.\n",
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fw->data[fw->size - 4], fw->data[fw->size - 3]);
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rt2x00dev->fw = fw;
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return 0;
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exit:
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release_firmware(fw);
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return retval;
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}
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int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev)
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{
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int retval;
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if (!test_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags))
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return 0;
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if (!rt2x00dev->fw) {
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retval = rt2x00lib_request_firmware(rt2x00dev);
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if (retval)
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return retval;
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}
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/*
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* Send firmware to the device.
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*/
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retval = rt2x00dev->ops->lib->load_firmware(rt2x00dev,
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rt2x00dev->fw->data,
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rt2x00dev->fw->size);
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return retval;
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}
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void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
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{
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release_firmware(rt2x00dev->fw);
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rt2x00dev->fw = NULL;
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}
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